Only the text shows in rendered view
With no further information there could be two main reasons:

If the object is visible in the Viewport, but invisible in the rendered image, you've set Disable in Renders for the object.
If it's already invisible in 3D Viewport when you set the mode Viewport &gt; Rendered (as your question sounds like), you probably disabled Camera Visibility under Properties &gt; Object &gt; Cycles Settings &gt; Ray Visibility